Circumferential Friction Resistance
2025/09/13

Basic Tests for Measuring Peripheral Friction Resistance (τ) in Ground Anchor Construction (Part 2): Bearing Capacity

Hello, everyone. This is Enta. Basic Tests for Measuring Peripheral Friction Resistance (τ) in Ground Anchor Construction (Part 1) I was working on a simple calculation sheet for peripheral friction, but due to various circumstances, I wasn’t able to finish it in time, so this time I thought I’d write about soil bearing capacity and load-bearing plates…

Circumferential Friction Resistance
2025/09/11

Basic Tests for Measuring Circumferential Friction Resistance (τ) in Ground Anchor Construction (Part 1)

Hello, everyone. This is Enta. I’ve been planning a basic test for ground anchor construction for the past few days. This is my first time dealing with this kind of case, so I can’t conduct the test using standard anchor materials... lol The reason is that, first of all, the embedment length of the anchors we’ll actually be using…

Installation Locations for Ground Anchor Work
2025/09/07

Should the road be sloped or level when installing ground anchors or reinforcing bars?

Hello, everyone. This is Enta. Which is better for ground anchor installation and rebar insertion: installing formwork or pressure plates? Why it’s best to install formwork level (horizontally) on-site. I’ve written about this before, but the same applies to formwork, lol. Road gradient…

Ground Anchors: Tension Control
2025/08/23

We conducted a basic test, but it wasn't very accurate.

Hello, everyone. This is Enta. I took the basic exam the other day. What exactly is the basic exam? (In a nutshell) Since the pressure gauge on the manufacturer’s jack is analog, I’ve replaced it with a digital one. The reason I switched to digital is that, no matter who’s reading it…

Ground Anchor Construction: Tension Control
2025/07/28

I've written a detailed description of the procedures for tension control in ground anchor construction.

Hello, everyone. This is Enta. I’d like to outline the procedures for tension control in ground anchor installation. ■ Purpose of Tension Control The tensioning (pulling) of ground anchors is performed to apply tension to the installed prestressed steel strands and to verify that the force is being effectively transmitted to the ground through the anchorage…

Ground Anchor Construction
2025/07/25

Basic Structure and Principles of Ground Anchor Systems — What Exactly Are Ground Anchor Systems? —

Hello, everyone. This is Enta. I’d like to give a brief explanation of ground anchor construction. ~The invisible force that stabilizes the ground through tensile force~ Ground anchor construction is a method that stabilizes and secures the ground or structures using a “pulling force” (tensile force). Slope failures and retaining walls…

Comparison of Retaining Structures
2025/07/21

[Comparative Guide] Rebar Insertion vs. Ground Anchors vs. Retaining Piles (For Newcomers)

Hello, everyone. This is Enta. In this post, I’d like to compare the “Big Three” in slope stabilization. (It took me a whole hour just to draw this picture… lol) “Reinforcement Insertion,” “Ground An…,” and other methods you often hear about as countermeasures against slope disasters such as rockfalls and landslides…

Removal of Ground Anchor Structures
2025/07/18

How to Remove Unnecessary Ground Anchors

Hello, everyone. This is Enta. How to Remove a Zabuton Frame and Relieve Load from Ground Anchors. In my previous post, I wrote about how to relieve load from ground anchor bolts. This time, I’ll explain how to relieve load at the anchor head. You’ll need acetylene gas and acid…

Head Processing
2025/07/12

How to Remove the Zabuton Frame and Unload the Ground Anchors

Hello, everyone. This is Enta. Do you know how to relieve load during ground anchor installation when zabuton frames are in place? I’ve actually experienced this once myself. During construction, the embankment slid, causing the anchors to become over-tensioned. At that time, 1…